Chapter 11

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11.1


11.2
 Solving system with matrix (reduced row echelon form)


One more tutorial for 3 variable system
https://www.youtube.com/watch?v=9LYVi-n-6Jw

part two
Part 1
Example 2

Creating Augmented matrix and reducing it with TI-84
https://www.youtube.com/watch?v=RmmMK2y9mYw

Input a matrix in to TI and turn it into row echelon matrix
https://www.youtube.com/watch?v=WaBG0Sg_Yx8





Finding Determinants
2x2
3x3
Another method for 3x3
11.3
 Cramer's rule
Part 1
PArt 2
11.4
 Solving the system with inverse matrix
https://www.youtube.com/watch?v=hu6B1d3vvqU
with 2x2 matrices
with 3x3
another 2x2 example
Calculating Inverse Matrix with TI-84
Finding Inverse 3x3 using Identity matrix
Finding inverse with row operations
11.4
 Operations on matrices
Addition/Subtraction
Scalar Multiplication
Product of Matrices